Product Description:

The CSH02.1B-CC-EC-NN-L3-DA-NN-FW motion-logic controller is manufactured by Bosch Rexroth Indramat and belongs to the CSH Advanced Controllers series. It is used in multi-axis drive systems to coordinate torque, speed, and safety functions between the inverter and higher-level PLCs. By generating command values and processing encoder feedback, the unit serves as the central control layer in cabinet-mounted servo systems used on packaging lines, pick-and-place gantries, and other automated equipment.

Two logic supply rails feed the processor and fieldbus sections, and the 12 V rail and 5 V rail each draw 500 mA. Fieldbus communication with the drives is handled by a SERCOS III master interface, so cyclic data moves over fiber rings without gateways. Control inputs recognize a minimum high level of 15 V, and position feedback arrives through the multi-encoder interface. Its encoder power budget is limited to 6 W to protect the DC/DC converters. For fast analog acquisition, connector X38 provides an input bandwidth of 1.3 kHz with 14-bit resolution, while its output stage updates command voltages at 24 mV per increment within 250 µs. The integrated safety channel executes the STO function, removing drive torque in less than a millisecond.

The separate L3 supply supports user I/O and brake circuits, and it can deliver 350 mA while consuming only 1.0 W from the main backplane. Resolver feedback lines may be routed up to 75 m without signal conditioning, and the controller holds the excitation carrier at 8 kHz to match standard rotary transducers. This arrangement helps maintain precise phase detection on long cable runs while preserving available encoder power for digital sensors. The analog conversion resources on X38 and the L3 auxiliary supply also support pressure transducers, solenoid brakes, and secondary feedback devices without requiring external interface modules.